<template>
	<view v-if="goods_info.goods_name" class="goods_detail_container">
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
			<swiper-item v-for="(item,index) in goods_info.pics" :key="index">
				<image :src="item.pics_big" @click="preview(index)"></image>
			</swiper-item>
		</swiper>
		
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 商品信息主体 -->
			<view class="goods_info_body">
				<!-- 商品名字 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 商品收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">
				快递:免运费
			</view>
		</view>
		
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		
		<!-- 商品导航组件区域 -->
		<view class="goods_nav">
			<uni-goods-nav :options="options" :fill="true" :button-group="buttonGroup" @click="onClick"
							@buttonClick="buttonClick" />
		</view>
		
	</view>
</template>

<script>
	
	import {mapState,mapMutations,mapGetters } from 'vuex'
	
	export default {
		data() {
			return {
				//商品详情对象
				goods_info:{},
				options: [{
							icon: 'shop',
							text: '店铺',
							infoBackgroundColor:'#ff0000',
							infoColor:"#fff"
						}, {
							icon: 'cart',
							text: '购物车',
							info: 0
						}],
					    buttonGroup: [{
					      text: '加入购物车',
					      backgroundColor: '#ff0000',
					      color: '#fff'
					    },
					    {
					      text: '立即购买',
					      backgroundColor: '#ffa200',
					      color: '#fff'
					    }
					    ]
			};
		},
		onLoad(option) {
			console.log(option);
			this.getGoodsDetail(option.goods_id);
		},
		methods:{
			...mapMutations('cart',['addToCart']),
			//点击了加入购物车和立即购买
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					//组织商品的购物车对象
					const goods = {
						goods_id:this.goods_info.goods_id,
						goods_name:this.goods_info.goods_name,
						goods_price:this.goods_info.goods_price,
						goods_count:1,
						goods_small_logo:this.goods_info.goods_small_logo,
						goods_state:true
					}
					//调用addToCart方法
					this.addToCart(goods);
				}
			},
			//加入购物车
			onClick(e){
				if(e.content.text === '购物车'){
					uni.switchTab({
						url:'/pages/cart/cart'
					})
				}
			},
			//获取图像预览信息
			preview(index){
				uni.previewImage({
					current:index,
					urls:this.goods_info.pics.map(x => x.pics_big)
				})
			},
			//获取商品详情
			async getGoodsDetail(goods_id){
				const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
				if(res.meta.status !== 200){
					return uni.$showMsg();
				}else{
					res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg');
					this.goods_info = res.message;
				}
			}
		},
		computed:{
			...mapState({
				cartList:state=>state.cart.cartList
			}),
			...mapGetters('cart',['total'])
		},
		//使用普通函数定义的watch监听器   在页面首次加载的时候不会被调用
		//要使用对象形式的监听方式进行监听
		watch:{
			total:{
				handler(newVal){
					const findResult = this.options.find(x => x.text === '购物车')
					if(findResult){
						findResult.info = newVal;
					}
				},
				//使用immediate属性来声明此监听器   是否在页面初次加载的时候立即调用
				immediate:true
			}
		}
	}

	
</script>

<style lang="scss">
swiper{
	height: 750rpx;
	image{
		width: 100%;
		height: 100%;
	}
}
.goods_detail_container{
	padding-bottom: 50px;
}
.goods-info-box{
	padding: 10px;
	padding-right: 0px;
	.price{
		color: #c00000;
		font-size: 18px;
		margin: 10px 0;
	}
	.goods_info_body{
		display: flex;
		justify-content: space-between;
		.goods-name{
			font-size: 13px;
			margin-right: 10px;
		}
		.favi{
			width: 120px;
			font-size: 12px;
			display: flex;
			flex-direction: column;
			align-items: center;
			justify-content: center;
			border-left: 1px solid #efefef;
			color: gray;
		}
	}
	.yf{
		font-size: 12px;
		color: gray;
		margin: 10px 0;
	}
}
.goods_nav{
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
}
</style>
